Door check and closer.



J. A. PETERSON.

noon CHECK AND CLOSER. APPLICATION FILED FEB. 27, 1909.

Patgnteci Dec. 14, 1909.

UNITED STATES PAFENT ormon.

JOHN A. PETERSON, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR T0 RUSSELL & ERWIN .MANUFAGTURING COMPANY, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

' DOOR CHECK AND CLOSER.

To all whom it may concern:

Be it known that I, JOHN A. PETERSON, a citizen of the United States, residing at New Britain, county of Hartford, State of Connecticut, have invented certain new and useful Improvements in Door Checks and Closers, of which the following is a full, clear, and exact description.

My invention relates to improvements in door closers, the object being to provide means whereby any abnormal strain put upon the door will not tend to fracture or loosen any of the parts of the apparatus or produce undue wear.

In the accompanying drawings, Figure 1 is a plan view of a door check and closer of well known design and illustrating the same as applied to a door, at the same time illustrating in plan my improvement as applied thereto. Fig. 2 is a relatively enlarged view of that particular feature of the apparatus to which my invention particularly relates, said view being partly in section. Fig. 3 is an illustration of a detail, the same being shown in side and end elevation. Fig. 4c is a side elevation of another detail.

1 represents a portion of a door; 2 a portion of the door casing; 3 conventionally represents a door closer; 4: represents the arm or lever of the door closer and 5 a bracket on the casing 2. The end of the arm 4 is connected with the bracket 5 by an adjustable arm or link, in this particular form, comprising the part 6, which is pivotally connected with the end of the arm 4t, and the part 7, which is screw threaded into the part 6 and which has a head 7 arranged within the buffer cylinder 8, connected to the bracket 5 by means of the screw plug 11 threaded into the end of the cylinder.

9 is a buffer spring arranged within the cylinder 8.

10 is a washer preferably arranged between the end of the spring and the head 11. Similar washers of different thickness may be readily inserted to put the spring 9 under more or less compression as the particular necessities demand.

In operation, the closing action of the closer 3 moves the arm 4 in a direction to apply force to the bracket 5 through the adjustable buffer connection described. In the event of any unusual strain, the spring 9 Seria1 No.480,383.

operates as a cushion to relieve said abnormal strain and eliminate the danger of breakage.

It should be understood that I have shown my invention only in the preferred form and that various modifications may be resorted to without departure from the spirit and scope of the same.

What I claim is:

1. A connecting arm for a door closer, comprising a link and including means for pivotally connecting said link at opposite ends to a movable and a fixed object and a yielding bufi'er arranged between said opposite ends.

2. A connecting arm for a door closer, comprising a link, means for pivotally con necting said link at its opposite ends to a movable and a fixed object, and means between the ends of said link to permit said link to yield endwise, said means including a cushioning device.

3. A connecting arm for a door closer,

comprising an arm having connecting means at each end, said arm being formed of two members movable longitudinally relatively to each other and operably associated with each other and a buffer between said two members.

4. In a device of the character described, a door closer mechanism including a swinging arm, a second arm or link pivotally connected to the end of said swinging arm and arranged in turn to be pivotally connected with a fixed abutment, said second arm being telescopic and buffer means carried by the telescopic parts of said arm.

5. A connecting arm for door checks, comprising two telescopic members, one of said members slidably fitting within the other of said members and a buffer spring arranged inside the latter to project the former and to operate as a cushion therefor.

6. A connecting arm for door checks, comprising two telescopic members, one of said members slidably fitting within the other of said members and a buffer spring arranged inside the latter to project the former and to operate as a cushion therefor and a removable spacing washer arranged adjacent to one end of said bufier spring.

7. A connecting arm for a door closer, including a cylinder, a piston entering one Patented Dec. 14, 1909.

slidable therein, a removable head for the l cluding adjustable means for varying the end of said cylinder and havinga head- 1 normal length of the same.

. described,

slidable therein, a removable head for the other end of said cylinder, a buifer spring 9., In'va device of the character between said heads and connecting means at. l a door closer, an arm movable thereby,

each end'ofsaid arnn A means for connecting the free end of said 8; A connecting arm for 'ad'oor closer, 'in'-' arm to a fixed abutment, said means includcluding a cylinder, a piston entering one ing a cushion.

end of said cylinder and having a head JOHN A. PETERSON.

other end of said cylinder, a buffer spring WVi'tnesses: between sald heads, and connecting means M. S. VVIARD, at each end of said arm, sa1d arm also lIl- HARRY E. MILES. 

